EMERSON SLS1508 SLS 1508

EMERSON SLS1508 SLS 1508

EMERSON SLS1508 SLS 1508

Fan and pump loads: In various fans, water pumps, and oil pumps, the resistance generated by air or liquid within a certain speed range is roughly proportional to the second power of speed n with the rotation of the impeller. As the speed decreases, the speed decreases to the second power of the speed. The power required for this load is proportional to the third power of speed. When the required air volume and flow rate decrease, using a frequency converter to adjust the air volume and flow rate through speed regulation can greatly save electricity. Due to the fact that the required power increases too quickly with the speed at high speeds, which is proportional to the third power of the speed, it is generally not advisable to operate fans and pumps with loads exceeding the power frequency.
Siemens can provide different types of frequency converters, and users can choose different types of frequency converters based on their actual process requirements and application scenarios. When selecting a frequency converter, the following precautions should be taken: 1. Select the frequency converter based on the load characteristics. If the load is a constant torque load, Siemens MMV/MDV frequency converter should be selected. If the load is a fan or pump type load, Siemens ECO frequency converter should be selected. When selecting a frequency converter, the actual motor current value should be used as the basis for frequency converter selection, and the rated power of the motor can only be used as a reference. In addition, it should be fully considered that the output of the frequency converter contains higher harmonics, which can cause the power factor and efficiency of the motor to deteriorate. Therefore, compared to using a power frequency grid to power the motor with a frequency converter, the current of the motor increases by 10% and the temperature rise increases by about 20%. So when selecting electric motors and frequency converters, consideration should be given to this situation and appropriate allowances should be left to prevent excessive temperature rise from affecting the service life of the motor.

369-HI-R-M-0-0-0-0
369-HI-R-M-0-0-0-E
369B1860G0028
44A730240-G01
IC697ACC722B
44A751101-G01
469-P1-HI-A20-E
489-P5-LO-A20
511-0101-08B
5136-PFB-VME
517-0224-16A-458525
531X303MCPARG1
531X303MCPBBG1
531X304IBDAMG1
531X304IBDARG1